Seiko Cal. 6121 - 887

The 6121-887 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6121 caliber with 18j jewels beating at 28,800 bph, it delivers a 52 hours power reserve. [seikata-wm-504bdeee17ef]

Also known as: World Timer, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

10.4mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Black

Jewels

18j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1975

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